#VU125669 Resource exhaustion in Orthanc - CVE-2026-5438

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Main Vulnerability Database Vulnerabilities #VU125669

#VU125669 Resource exhaustion in Orthanc - CVE-2026-5438

Published: April 9, 2026


Vulnerability identifier: #VU125669
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-5438
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Orthanc
Software vendor:
Orthanc

Description

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to improper resource management in HTTP request handling when processing an HTTP request with Content-Encoding: gzip. A remote attacker can send a specially crafted gzip payload to cause a denial of service.


Remediation

Install security update from vendor's website.

External links